8IFS

SARS-CoV-2 3CL protease (3CLpro) in complex with compound 7

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	3C-like proteinase nsp5	polymer	306	33825.5	2	UniProt (P0DTC1) Pfam (PF05409) UniProt (by SIFTS) (P0DTD1) In PDB	Severe acute respiratory syndrome coronavirus 2	3CL-PRO,3CLp,Main protease,Mpro,Non-structural protein 5,nsp5,SARS coronavirus main proteinase
2	A, B	(8~{S})-7-[(2~{S})-2-(~{tert}-butylcarbamoylamino)-3,3-dimethyl-butanoyl]-~{N}-[(1~{S})-1-cyano-2-[(3~{S})-2-oxidanylidenepyrrolidin-3-yl]ethyl]-1,4-dithia-7-azaspiro[4.4]nonane-8-carboxamide	non-polymer		552.8	2	Chemie (OZL)
3		water	water		18.0	9	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	67651.1
Non-Polymers*	Number of molecules	2
	Total formula weight	1105.5
All*	Total formula weight	68756.6

*Water molecules are not included.